Blade for hones



Feb. 12, 1952 J. J. PALoTsEE BLADE FOR HONES 5 Sheets-Sheet l Original Filed Nov. 12, 1946 J. J. PALOTSEE BLADE FOR HONES Feb. 12, 1952 I5 Sheets-Sheet 2 Original Filed Nov. 12, 1946 J. J. PALOTSEE BLADE FOR HONES Feb. 12, 1952 3 Sheets-Sheet Z Original Filed Nov. 12, 1946 Patented Feb. l2, 1952 BLADE '.FORLHONES John .1. Palotsee, Youngstown, Ohio Original. application November 12, 1946, .Serial No.k 709;1'7'7, now Patent No. 2,443,268; dated" Junel 15 1948. Divided 'and' thisl application 'Februaryl 27,1948, -Serial No. 11,380- f f v v 7 Claims.

VThis invention is a novel adjustable hone .particularly adapted Vfor use inconnection-with hone driving or rotating machines, preferably but not necessarily kof the typefshown :in mylU. S. 'Letters iPatentiNo. '2,358,24idated September '12, 1944, :the ypresent invention being an 'improvement von thehonedisclosed in :ny-'U'. 1S. 'Letters PatentA No. 2,269,878 dated January '6, 1942; No. 2,332,463 dated October 19, 1943; No. 2,338,963 dated Janu- 'ary"1"-1, 1944 and the hone `disclosed inv my co pending application lSerial v No. v 585,629, A filed March 3U, 1945', whichY issued as Patent No. 2,412,419, Adated December 10, v1946. The present application -isa division of my copending application j'Serial No. 709,17'7, led November 12, 1946, -now 1U. S. Letters Patent No. 2,443,268, dated June 15, 1948. `1llie principal objects -of the present invention are to provide an adjustable abrasive cylindrical hone, `particularly adapted for grinding, machine finishing, `polishing' or boring cylindrical 1'bearings or thel like, the hone consisting-of a spindle carrying an annular series -of radially disposed blades', each carrying a 'Carborundum -or other abrasive stone section,r the stones of fthe blades when fully contracted Varoundv Ithe spindle-forniing a cylindrical surface having spiral grooves on the exterior surface thereof, lthe blades and spindle being provided with complementary tapered surfaces,with means Ifor simultaneously shifting theblades axially of the spindle to effect expansion or contraction ofthe' hone with respect to the spindle to vary the diameter thereof. and the spindle having mea-ns `thereon yfor yielda-bly maintaining the blades in close contact therewith in all adjusted diameters, whilepermitting shiftlng of the blades with respect `to thespindle.

A vfurther object of the invention is to provide a hone of the above type with an improved lnovel means for assembling and mounting vvthe Carborundumv stones on theirrelated blades, whereby various different sets or types of Carborundum or other abrasive stones may be used Iwith the same set of 'blades,.to perform differen-tkinds or grades of' work.

A further object of ythe invention is to provide an adjustable hone comprising a plural-ity of sets of aligned' blades on one spindle with vmeans whereby the hones 'may'be ycontracted and expanded simultaneously "by, a single -adusting means. l d

`Further minor objects of the invention will vbe hereinafter set forth.

I will explain the invention with V`reference to the. accompanying drawings, which illustrate several practical Vvembodiments thereof, lto enable others familiar with the art to adopt and 'use the same; and will summarize-inthe claims the novel features of construction, and novel combinations of parts, .for which Vprotection is desired'.

" In said drawings:y

Figures 1 and vla. together show :a longitudinal section, partly iin elevation, through. a :hone yembodyng -my invention. Y

Fig.v 2 is an miterend. view ofthe hone shown 3 nFigal. y f- 3: is a .section :on the-line 3-3, Eig.. 51. l

' Fig. :4 is asectionzon the line. 4 4., Fig. ,1, showing the "blades-.in fullyfretracted position.

f Fig. `5v is a section :similar ato Fig. .4. showing the blades in fully' expanded position.

Fig. 6 is a planV view ofthe spindle, detached. Fig. 7 is an end view of the spindle, shown in Fig. .6. f .l 1 Fig. 8 isan elevation of thespring holdershow-n in Fig. 1, detached.

Fig. 9 is an elevation showing the spring. and lbolt Vused Jin connection with theholder shown :in Fig. 8, detached.

Fig- 10 is a bottom plan view of `one :ofthe stone holding blades, detached.

Fig. 1l is a longitudinal section, H-ll, Fig. 10.

Fig. 12 is an end view of 'the blade shown in Fig. 10.

Fig. 13 isa bottom plan view showing the end of a modified blade.

Fig. 14 is a longitudinal section through the Yend of the blade shown in Fig. 13.

Fig. l5 is a plan view of one of the stone holders. Fig. 16 is a section on the line lli-I6, Fig. 15. Fig. 17 is similar to Fig.. 15 but :showing a section through a modified stone'holder.

The hone comprises a spindle I of hexagonal on the line cross section and of relatively great length, having thereon spaced pairs of inclined cam surfaces la, I'b (Fig. 6) preferably formed integrallythere-- with, said surfaces la, Ib sloping in the same direction and `at the same angle vwith respect 'to the spindle I, the surfaces la, lb being each disposed at the center of one of the faces of the spindle I. In Figs. 4 and 5, the spindle l is shown hexagonal in cross-section, hence each .annular series of cam surfaces la, Ib would comprise :six in number; however, if the spindle has 4, 8 or more sides, a corresponding number of surfaces la, 'lb in each series would be provided. Each annular series cfinclined surfaces la, ibis adapt-v ed to support an annular series of blades, which carry `the stones, there being as many annular series of blades as there are sets of cam .surfaces la, Fb.

One end of spindleA l is reduced as at v-Ic (Fig. la) and the adjacent end -of' the vspindle l .is threadedas at lfd, said threaded portion vld'being adapted to be mountedv directly on the .shaft of a honing machine, such as disclosed in my U..S. Letters Patent No. 2,358,247 dated September i125, 1944, although the same may bev mounted in any other type Aof .driving orrotating machine. Pref to erably spindle ll is provided with a bore Icex tending therethrough, from the. threaded end from bore Ie and discharge between each of the remaining sets of cam surfaces Ia, Ib, the duct Ie being adapted to supplyV lubricant from the honing machine which isdischarged into the spindle beneath each set of stones 2, lto lubricate the parts and to assist in the honing operation.

Slidably mounted upon the reduced portion Ic of the spindle I, adjacent the threaded portion Id, is a collar 3 (Fig. la) having a conical face 3a engaging the correspondingly beveled ends 2a ofthe innermost set of blades 2, the conical face 3a maintaining the adjacent-endsof the blades 2 in assembled' relation around the spindle.

Around the spindle I and contacting the inner end of the collar 3 is an anti-friction bearing l; andon the threaded end Id of spindle I is an adjusting collar or nut 5 which may be of smooth bore, as at 5a, or to engage the threads I d of the spindle i. ANut 5 is provided with an annular recess 5b in its end adjacent the collar 3, said recess housing a spring 6. The recess-Eb is enlarged at its outer end 5c adjacent the collar 3 to receive the end Eof anti-friction bearing l. The

collar or nut 5 may be shiitedby any desired f means or manually rotated to shift the collar 3 axially of spindle I, the means for rotating the nut formingno part of my present invention.

f At the outer end of the spindle I is a cylindrical bore Ih extending to the outer end of the 1;

spindle I, said bore receiving a tubular spring holder 4 (Fig. 8) having its inner end closed but provided with a hole lla (Figs. 1 and 8) for the passage oi a bolt 3 (Figs. l and 9), the head of which slidably fits the bore of the spring holder :9:31

4, said bolt 8 having its inner end threaded to engage a tapped enlargement Ig of the lubricant bore Ie of thespindle I, thel bolt 8 closing the bore-V Ie beyond the lateral duct I f. -Within the spring holder d, interposed between the `inner e end thereof and the head of bolt 8' is a spring 9 1 (Figs. l and 9) normally urging the spring holder 4 inwardly of the bore ih into the position shown in Fig.` 1, the spring however, permitting the spring holder 4 to slide outwardly of bore Ih for the purpose hereinafter described. The outer end of sleeve 4 beyond the adjacent end ofthe spindle i is provided with a conicaily shaped head 4b similar' to but oppositely inclined with respect to the conical recess 3a of collar 3, said u conical head 4b of the spring holder engaging the adjacent taperedends 2b of the outermost set of blades 2, as shown in Fig. l.

By the above construction, when collar 0r nut 5 isshiited on the spindle i towards the collar 3,

the'collar Vl! will be shifted towards the head 4b, and the blades 2 will be thereby shifted radially outwardly or inwardly'on the cam surfaces Ea, Ib; the conical portions 3a and 4b of collar 3 and spring holder 4l, respectively', holding the blades 2 in assembled relation around the spindle, while permitting enlarging and contracting of the effective diameter of the hone.

Spring 5 in collar or nut 5 is somewhat stiffer than spring S in spring holder 4, so that as collar or nut `5 is shifted toward the head 4b, the pressure of the stronger spring 6 acting through the collar 3 will shift the blades 2 against the action of the weaker spring 9, this yieldably permitting the conical head 4b to be shifted a corresponding amount.

spindIeKI, and having its outer face 2c arcuate in shape, the sides 2d being radially out so that when the blades 2 are fully contracted around the spindle I, as shown in Figs. 3 and 4, the sides 2d will squarely abut' While the outer surfaces 2c will form a substantially cylindrical surface entirelyaround the' spindle I concentric with the axis thereof.

lIn the base 2b of each blade are a pair of spaced inclined slots 2e; 2f respectively, the bases of which are inclined at the same angle to the axisof the spindle I as the inclined cam surfaces Ia, Ib ofthe spindle. The slots 2e slidably engage the cam surfaces Ia of the spindle while the slots 2f engage the inclinedcam surfaces Ib oi the related set on the spindle I, as indicated in Figs. l and la, `so that, as the assembly of blades 2 is shifted axially -oi4 the spindle, the effective diameter of the hone will -be'increased or decreased according to the direction of movement Vof the blades. Preferably the bases of the slots 2e, 2f are flat, while the outer faces of-the inclined surfaces I a, Ib may be arcuate, the latter giving the hone smoother operation. However, the outer ends of the inclined camsurfaces la, lb may if desired be also flat. f

The inner end of the outermost set of blade 2 opposite from the inclined end 2a: has anextension 2g, as shown in Figs. 1, 10 and 11, the outer face of which has a semi-circular groove 2h for the reception of an endless coiled spring I0 seating in the groove 2h, the spring I0 contracting the adjacent ends of the series of blades 2 around the spindle I, while permitting expansion and contraction of the effective diametenof the hone. Both ends of the intermediate. blades 2 would be similarly provided with extensions 2g with grooves 2h for the reception of similar endless springs IIl. The innerendsof the innermost series of blades 2 adjacent .the collar .3 would be similarly constructed to receive an end.- less spring I0 for contracting the ends of that set of blades around the spindle` I. f

In event the hone spindle I is relatively short, and holds only one set of blades 2, instead of the multiple sets shown, the` extensions 2g of the blades shown in Figs. l()V and 1l would be omitted and both ends of the blades would be beveled as at 2x (Figs. 13 and 14), the bevel corresponding with the conical ,portions 2b and 2a respectively of the blades shown in Figs. 1, 10, and 11.

In the outer face of each blade 2 are a vseries of tapped bores 2k (Fig. l1) having their outer ends countersunk as at 2m whereby the stone holders II shown more particularly in Figs. 15, 1EV and 1'7 may besecured to the blades 2.

Eachstone holder II, shown in Figs. 15 and 16, comprises a metallic strip of arcuate shape conforming with the curvatureof theouter face 2c of the respective blades 2, the side edges of the holder II being flanged divergently downwardly as at .Ila,. if desired, to Contact4 correspondingly shaped shortedge portions at thesldes of their respective blades 2', as indicated in Figs. .3, 4 and 5. Holders II are also provided with conical offset portions IIb,(Fig. ,16)A adapted to ll the-countersunk portions 2m of. the blades (Fig. l1), the oil'set portions IIb-having holes IIc therethroughfor the .passageof -the screws I2 which securethe holders II to the -bladesgl A modified structure of the stone holder Il is shown in Fig. 17, in which reference numerals denote similar parts. However, the flanges Ila at the sides are omitted, and extending longitudinally of the holder II at each side of the oiset portions Ilc are troughs IIx to assist in retaining the stone I3 on the holder, the stones having openings I3a therein opposite each of the screws I2 which hold the holders on the blades 2. The stones I3 may be secured to the outer surfaces of holders I I in any desired manner to form lan integral unit therewith, preferably by means of cement or other adhesive.

By the above construction different sets of stones I3, mounted in their holders II may be used with the same set of blades 2, to provide a hone for performing different characters of work, the stones i3 with their holders II being readily removable or attachable to the blades 2 by inserting or removing the screws I2.

In operation Movement of the blades 2 axially of the spindle I by shifting the nut 5 causes the blades 2 to move away from or towards the center of the spindle I, th-us increasing or decreasing the diameter of the hone. This movement is the result of a thrust against collar 5, the spring 6 in the collar or nut 5 acting against the anti-friction bearing 1. The shifting of collar 5 may be performed electrically, hydraulically, manually or by any other suitable means.

Spiral grooves I3b are cut in the stones I3 to facilitate cutting, said grooves permitting cuttings and cutting fluid to pass away. The direction of the spiral grooves is preferably reversed on adjacent stones to improve cutting.

The length of the hone will determine the number of sets of blades 2 and the diameter of the hone will determine the number of blades in each set. Instead of being formed conical, the head 4b and the recess 3a in collar 3, and the ends of the blades 2a, 2b may be formed as frustums of a pyramid.

I do not limit my invention to the exact forms shown in the drawings, for obviously changes may be made therein within the scope of the claims.

I claim:

1. In a hone, a blade having an arcuate outer face and having aligned countersunk tapped bores; countersunk screws engaging said bores; an arcuate holder plate on the outer face of the blade having open aligned conical offset portions on its under side receiving the countersunk heads of said screws passing through the offset portions, and honing stones adhesively secured to the holder plate and having access openings therethrough opposite the offset portions.

2. In a hone, a blade having an arcuate outer face and having aligned countersunk tapped bores; countersunk screws engaging said bores; an arcuate holder plate on the outer face of the blade having open aligned conical offset portions on its under side receiving the countersunk heads of said screws passing through the oiset portions. and honing stones adhesively secured to the holder plate and having access openings therethrough opposite the oiset portions, the side edges of the holder being flanged laterally and engaging correspondingly beveled portions at the sides of the blade.

3. In a hone, a blade having an arcuate outer face and having aligned countersunk tapped bores; countersunk screws engaging said bores; an arcuate holder plate on the outer face of the blade having open aligned conical offset portions on its under side receiving the countersunk heads of said screws passing through the offset portions, and honing stones adhesively secured to the holder and having access openings therethrough opposite the offset portions, the holder plate having longitudinal troughs therein spaced from both sides of the conical offset portions receiving corresponding ribs on the under side of the stone.

4. In a hone, a yblade having an arcuate outer face and having aligned countersunk tapped bores; countersunk screws engaging said bores; an arcuate holder plate on' the outer face of the blade having open aligned conical offset portions on itsunder side receiving the countersunk heads of said screws passing through the offset portions, honing stones adhesively secured to the holder and having access openings therethrough opposite the offset portions, and arcuate extensions on the ends of the blade provided with semi-circular grooves.

5'. In a hone, a blade having an arcuate outer face and having aligned countersunk tapped bores; countersunk screws engaging said bores; an arcuate holder plate on the outer face of the blade having open aligned conical oiset portions on its under side receiving the countersunk heads of said screws passing through the offset portions. honing stones adhesively secured to the holder and having access openings therethrough opposite the oiset portions; the side edges of the holder being anged laterally and engaging correspondingly beveled portions at the sides of the blade; and arcuate extensions on the ends of the blade provided with semi-circular grooves.

6. In a hone, a blade having an arcuate outer face and having aligned countersunk tapped bores; countersunk screws engaging said bores; an arcuate holder plate on the outer face of the blade having open aligned conical oiset portions on its under side receiving the countersunk heads of said screws passing through the oiset portions. honing stones adhesively secured to the holder and having access openings therethrough opposite the oiset portions; the holder having longitudinal troughs therein spaced from both sides of the conical offset portions receiving corresponding ribs on the under side of the stone; and arcuate extensions on the ends of the blade provided with semi-circular grooves.

7. In a hone, a blade having an arcuate outer face and having aligned countersunk tapped bores; countersunk screws engaging said bores; an arcuate holder plate on the outer face of the blade having open aligned conical offset portions on its under side receiving the countersunk heads of said screws passing through the oiset portions, honing stones adhesively secured to the holder and having access openings therethrough opposite the oiset portions; the holder having longitudinal troughs therein spaced from both sides of the conical offset portions receiving corresponding ribs on the under side of the stone; and arcuate extensions on the ends of the blades provided with semi-circular grooves.

JOHN J. PALOTSEE.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 1,821,518 Jeschke i Sept. 1, 1931 2,246,223 Shue June 17, 1941 2,412,419 Palotsee Dec. 10, 1946 

